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Grandstream GBX20 20-Button Color LCD Expansion Module

Grandstream GBX20 20-Button Color LCD Expansion Module

SKU 105130 New
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Item Information

The Grandstream GBX20 is a 20-Button Color LCD DSS/BLF expansion module compatible with Grandstream GRP2615 and GXV3350 IP phones.  The GBX20 adds up to 40 buttons that can be programmed as busy lamp fields, speed dials, or features like call transfer, door phone access, forward and pickup increasing the users productivity and functionality.


  • Compatible with Grandstream IP Phones: GXV3350, GRP2650 & GRP2615
  • 20 per page (each module contains 2 pages, for up to 40 lines per module, up to 160 with 4 daisy-chained modules
  • 4.3 inch (480x272) TFT color LCD
  • Local GUI with animation driven from the host GRP2615, GRP2650 or GXV3350 phone; Multiple line/call appearances
  • GBX20 firmware is upgraded by direct network download through host phone (GRP2615, GRP2650 or GXV3350)’s network connection and firmware upgrade setup (GDMS)
  • A single GBX20 can be powered by host phone (GRP2615, GRP2650 or GXV3350); when 2 or more GBX20 is connected an included 12V PSU is needed.


  • GBX20 Extension Board
  • Base stand
  • Extension Board Connector Plate
  • Screws
  • USB cable
  • 12V Power Adapter
  • Quick Installation Guide

Grandstream GBX20 20-Button Color LCD Expansion Module
New items ship in their original manufacturer's packaging. These items are in excellent condition with no blemishes on their housings.

UPC: 06947273702931

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  • Item(s) must be returned within 30 days from invoice date.
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